摘要
从均匀平面波的传播规律出发，建立了边界场与同部场之间的联系，进而对内部场进行Ｔａｙｌｏｒ展开，取二阶近似并以中心差分代替导数，得到了一种形式十分简洁的频域二阶吸收边界条件，该吸收边界条件具有良好的局部性，而且对矩形网格和曲线坐标网格都适用．文中给出了一些计算实例，结果是较为满意的．
Under the condition of uniform plane wave incidence, a relation between the boundary field and the internal field is established. Then the internal field is expanded as a Taylor series. On truncating it at second order and substituting partial derivatives with center difference, a concise second order absorbing boundary condition in frequency domain is obtained. This condition has good performance of localization and can be applied to both the rectangular and curvilinear grid system. Some typical examples are computed with the satisfactory results.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
1998年第5期629-632,共4页
Journal of Xidian University
关键词
吸收边界条件
电磁散射
数值计算
absorbing boundary condition electromagnetic scattering numerical calculation
